Journal article
Design of optimized finite impulse response digital filters for use with passive Fourier transform infrared interferograms
Analytical chemistry (Washington), Vol.62(17), pp.1768-1777
09/01/1990
DOI: 10.1021/ac00216a010
Abstract
A design technique for finite impulse response (FIR) digital filters Is described that allows a narrow filter bandpass to be achieved with a small number of filter coefficients. Based on multiple regression analysis, this approach produces filters that are tailored to the specific type of signal to which they will be applied. In the present application, filters are developed for use in extracting information pertaining to single Infrared spectral bands directly from Fourier transform Infrared (FTIR) interferograms. The regression-based technique is described and compared to two standard approaches to FIR filter design. Interferograms collected by a passive FTIR remote sensor are used to evaluate the performance of the developed filters in terms of signal-to-noise ratios and computational efficiency. In addition, the bandpass characteristics of the computed filters are examined. On the basis of these evaluation criteria, the regression approach is judged to provide superior performance In terms of its ability to produce filters that are computationally efficient and that achieve high signal-to-noise ratios. © 1990, American Chemical Society. All rights reserved.
Details
- Title: Subtitle
- Design of optimized finite impulse response digital filters for use with passive Fourier transform infrared interferograms
- Creators
- Gary W SmallAmy C HarmsRobert T KroutilJohn T DitilloWilliam R Loerop
- Resource Type
- Journal article
- Publication Details
- Analytical chemistry (Washington), Vol.62(17), pp.1768-1777
- Publisher
- American Chemical Society
- DOI
- 10.1021/ac00216a010
- ISSN
- 0003-2700
- eISSN
- 1520-6882
- Language
- English
- Date published
- 09/01/1990
- Academic Unit
- Chemistry
- Record Identifier
- 9984216683002771
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